• Code: AD
• Description: Timeout error during waiting for completion of scanning DMA transfer.
• Causes:
• Remedy: 1 Document scanner unit failure Replace the document scanner unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: AF
• Description: The white tape cannot be detected.
• Causes:
• Remedy: 1 White level data failure Execute the "Acquisition of white level data (Function code 55)". 2 Harness connection failure of document scanner unit Check the harness connection of the document scanner unit and reconnect it. 3 Harness connection failure of FB motor harness Check the harness connection of the FB motor harness and reconnect it. 4 Document scanner unit failure Replace the document scanner unit. 5 Main PCB failure Replace the main PCB ASSY.

• Code: B0
• Description: Scanning flat cable connection failure.
• Causes:
• Remedy: 1 Incomplete insertion of the harness of the document scanner unit Reconnect the harness for the document scanner unit correctly. 2 Document scanner unit failure Replace the document scanner unit. 3 Main PCB failure Replace the main PCB ASSY.

• Code: B1
• Description: Dark level offset data level error for scanning.
• Causes:
• Remedy: 1 Document scanner unit failure Replace the document scanner unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: B2
• Description: Gain control data level error for scanning.
• Causes:
• Remedy: 1 Document scanner unit failure Replace the document scanner unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: B3
• Description: The scanning area setting left edge detection error. (white tape)
• Causes:
• Remedy: 1 Document scanner unit failure Replace the document scanner unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: B4
• Description: The scanning area setting right edge detection error. (white tape)
• Causes:
• Remedy: 1 Document scanner unit failure Replace the document scanner unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: B7
• Description: A/D converter standard voltage failure; at High side.
• Causes:
• Remedy: 1 White level data failure Execute the "Acquisition of white level data (Function code 55)". 2 Document scanner unit failure Replace the document scanner unit. 3 Main PCB failure Replace the main PCB ASSY.